<template>
  <div class="login-container">
    <!-- 导航栏 -->
    <van-nav-bar class="page-nav-bar" title="登录" />
    <!-- 登录的表单 -->
    <!-- 表单验证：submit
    1.给van-filed组件配置rules验证规则

    2.当表单提交时，会自动触发表单验证
    如果验证通过，会触发submit 事件
    如果验证失败，不会触发submit -->
    <van-form ref="loginForm" @submit="onSubmit">
      <van-field
        v-model="user.mobile"
        name="mobile"
        placeholder="请输入手机号"
        :rules="userFormRules.mobile"
        type="number"
        maxlength="11"
      >
        <i slot="left-icon" class="toutiao toutiao-shouji"></i>
      </van-field>
      <van-field
        v-model="user.code"
        name="code"
        placeholder="请输入验证码"
        :rules="userFormRules.code"
        type="number"
        maxlength="6"
      >
        <i slot="left-icon" class="toutiao toutiao-yanzhengma"></i>
        <template #button>
          <van-count-down
            v-if="isCountDownShow"
            :time="1000 * 60"
            format="ss s"
            @finish="isCountDownShow = false"
          />
          <van-button
            v-else
            class="send-sms-btn"
            native-type="button"
            round
            size="small"
            type="default"
            @click="onSendSms"
            >发送验证码</van-button
          >
        </template>
      </van-field>
      <div class="login-btn-wrap">
        <van-button class="login-btn" block type="info" native-type="submit"
          >登录</van-button
        >
      </div>
    </van-form>
  </div>
</template>

<script>
import { login, sendSms } from "@/api/user";
export default {
  name: "LoginIndex",
  components: {},
  props: {},
  data() {
    return {
      user: {
        mobile: "",
        code: "",
      },
      userFormRules: {
        mobile: [
          { required: true, message: "手机号不能为空" },
          { pattern: /1[3|5|8]\d{9}/, message: "手机号格式错误" },
        ],
        code: [
          { required: true, message: "请填写用户名" },
          { pattern: /^\d{6}$/, message: "手机号格式错误" },
        ],
      },
      isCountDownShow: false, //是否展示倒计时
    };
  },
  computed: {},
  watch: {},
  created() {},
  mounted() {},
  methods: {
    async onSubmit() {
      //获取表单数据
      const user = this.user;
      //表单验证
      //在组件中必须通过this.$toast来调用Toast组件
      this.$toast.loading({
        message: "登陆中...",
        forbidClick: true, //禁止使用背景
        duration: 0,
      });
      //提交表单请求验证
      try {
        const { data } = await login(this.user);
        this.$store.commit("setUser", data.data);
        this.$toast.success("登陆成功");
        //登陆成功 跳转原来页面
        this.$router.back()
      } catch (err) {
        if (err.response && err.response.status === 400) {
          this.$toast.fail("手机号或验证码错误");
        } else {
          this.$toast.fail("请求超时，请重试");
        }
      }
      //根据请求响应结果处理后续操作
    },
    async onSendSms() {
      // console.log("onSendSms");
      try {
        await this.$refs.loginForm.validate("mobile");
      } catch (err) {
        return console.log("验证失败", err);
      }
      //校验手机号

      //验证通过，显示倒计时
      this.isCountDownShow = true;
      //请求发送验证码
      try {
        await sendSms(this.user.mobile);
        this.$toast("发送成功");
      } catch (err) {
        //发送失败，关闭倒计时
        this.isCountDownShow = false;
        if (err.response.status === 429) {
          this.$toast("发送太频繁，请稍后重试");
        } else {
          this.$toast("发送失败，请稍后重试");
        }
      }
    },
  },
};
</script>

<style scoped lang="less">
.login-container {
  .toutiao {
    font-size: 37px;
  }
}
.send-sms-btn {
  background-color: #ededed;
  width: 160px;
  height: 46px;
  line-height: 46px;
  font-size: 22px;
  color: #666;
}
.login-btn-wrap {
  padding: 53px 33px;
  .login-btn {
    background: #6db4fb;
    border: none;
  }
}
</style>